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Author: Heiermann, Monika × End date: 2019 × DDC: 630 × Type: Text × Subject: Aerobic deterioration × Subject: Biomass storage ×

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    Improving aerobic stability and biogas production of maize silage using silage additives
    (Amsterdam : Elsevier, 2015) Herrmann, Christiane; Idler, Christine; Heiermann, Monika
    The effects of air stress during storage, exposure to air at feed-out, and treatment with silage additives to enhance aerobic stability on methane production from maize silage were investigated at laboratory scale. Up to 17% of the methane potential of maize without additive was lost during seven days exposure to air on feed-out. Air stress during storage reduced aerobic stability and further increased methane losses. A chemical additive containing salts of benzoate and propionate, and inoculants containing heterofermentative lactic acid bacteria were effective to increase aerobic stability and resulted in up to 29% higher methane yields after exposure to air. Exclusion of air to the best possible extent and high aerobic stabilities should be primary objectives when ensiling biogas feedstocks.